[Teutonic Speedra...]

Was checking out some of their stuff. Look through their galleries, some pretty intense f-bodies (drag race), but still cool. They do some roadrace vette stuff. They provide a lot of info in the "How To Build High Performance Chevy LS1/LS6 V8's". I never knew about the timing chain tensioner that GM's makes but did not provide from the factory b/c of cost. Also, drilling holes in the lifter trays, etc.

Wheel to Wheel Powertrain